NodeByeBye

[Olimex ESP-32 PoE] based.

i2c rfid reader

MFRC522, 3v3

i2c OLED screen

SD 1306, 128x64, blue, 3v3

Wiring

 const uint8_t I2C_SDA_PIN = 13; //SDA;  // i2c SDA Pin, ext 2, pin 10
 const uint8_t I2C_SCL_PIN = 16; //SCL;  // i2c SCL Pin, ext 2, pin 7

 const uint8_t oled_sd1306_i2c_addr = 0x3C;
 const uint8_t mfrc522_rfid_i2c_addr = 0x28;

 const uint8_t mfrc522_rfid_i2c_irq = 4;  // Ext1, pin 10
 const uint8_t mfrc522_rfid_i2c_reset = 5; // Ext1, pin 9

 const uint8_t aart_led  15 // Ext 2, pin 8
 const uint8_t pusbutton  0 // Ext 1, pin 6